The Early Super Missiles sequence break in Super Metroid allows Super Missiles to be collected without fighting Spore Spawn. The only Super Missile pack that can be obtained early is the one in the room on the top right from the Green Brinstar mainstreet. Reaching it entails passing underneath two closing gates over a bridge of breaking blocks. Normally, the Speed Booster is needed to do this. There are two work-arounds, however: